Examples with ImportResult org.aion.mcf.core.ImportResult used on opensource projects

Example 11 with ImportResult

use of org.aion.mcf.core.ImportResult in project aion by aionnetwork.

the class BlockchainForkingTest method testSameBlockDifferentNonceAndSolutionSimple.

/*-
     * Tests the case where multiple threads submit a single block (content) but
     * with different mining nonces and solutions. In this case our rules dictate
     * that all subsequent blocks are considered invalid.
     *
     *          (common ancestor)
     *          /               \
     *         /                 \
     *        /                   \
     *       (a)o                 (b)x
     *
     * Given:
     * a.td == b.td
     */
@Test
public void testSameBlockDifferentNonceAndSolutionSimple() {
    StandaloneBlockchain.Builder builder = new StandaloneBlockchain.Builder();
    StandaloneBlockchain.Bundle b = builder.withValidatorConfiguration("simple").build();
    StandaloneBlockchain bc = b.bc;
    AionBlock block = bc.createNewBlock(bc.getBestBlock(), Collections.emptyList(), true);
    AionBlock sameBlock = new AionBlock(block.getEncoded());
    ImportResult firstRes = bc.tryToConnect(block);
    // check that the returned block is the first block
    assertThat(bc.getBestBlock() == block).isTrue();
    ImportResult secondRes = bc.tryToConnect(sameBlock);
    // the second block should get rejected, so check that the reference still refers
    // to the first block (we dont change the published reference)
    assertThat(bc.getBestBlock() == block).isTrue();
    assertThat(firstRes).isEqualTo(ImportResult.IMPORTED_BEST);
    assertThat(secondRes).isEqualTo(ImportResult.EXIST);
}

Example 12 with ImportResult

use of org.aion.mcf.core.ImportResult in project aion by aionnetwork.

the class BlockchainIntegrationTest method testAppendIncorrectTimestampBlock.

@Test
public void testAppendIncorrectTimestampBlock() {
    StandaloneBlockchain.Bundle bundle = (new StandaloneBlockchain.Builder()).withValidatorConfiguration("simple").withDefaultAccounts().build();
    StandaloneBlockchain bc = bundle.bc;
    AionBlock block = bc.createNewBlock(bc.getBestBlock(), Collections.EMPTY_LIST, true);
    // set the block to be created 1 month in the future
    block.getHeader().setTimestamp((System.currentTimeMillis() / 1000) + 2592000);
    ImportResult result = bc.tryToConnect(block);
    assertThat(result.isSuccessful()).isFalse();
}

Example 13 with ImportResult

use of org.aion.mcf.core.ImportResult in project aion by aionnetwork.

the class BlockchainIntegrationTest method testSimpleFailedTransactionInsufficientBalance.

@Test
public void testSimpleFailedTransactionInsufficientBalance() {
    // generate a recipient
    final Address receiverAddress = Address.wrap(ByteUtil.hexStringToBytes("CAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFECAFE"));
    StandaloneBlockchain.Bundle bundle = (new StandaloneBlockchain.Builder()).withValidatorConfiguration("simple").withDefaultAccounts().build();
    StandaloneBlockchain bc = bundle.bc;
    // (byte[] nonce, byte[] from, byte[] to, byte[] value, byte[] data)
    AionTransaction tx = new AionTransaction(BigInteger.valueOf(1).toByteArray(), receiverAddress, BigInteger.valueOf(100).toByteArray(), ByteUtil.EMPTY_BYTE_ARRAY, 1L, 1L);
    tx.sign(bundle.privateKeys.get(0));
    AionBlock block = bc.createNewBlock(bc.getBestBlock(), Collections.singletonList(tx), true);
    assertThat(block.getTransactionsList()).isEmpty();
    assertThat(block.getTxTrieRoot()).isEqualTo(HashUtil.EMPTY_TRIE_HASH);
    ImportResult connection = bc.tryToConnect(block);
    assertThat(connection).isEqualTo(ImportResult.IMPORTED_BEST);
}

Example 14 with ImportResult

use of org.aion.mcf.core.ImportResult in project aion by aionnetwork.

the class AionBlockLoader method blockWork.

private void blockWork(AionBlock block) {
    if (block.getNumber() >= blockchain.getBestBlock().getNumber() || blockchain.getBlockByHash(block.getHash()) == null) {
        if (block.getNumber() > 0 && !isValid(block.getHeader())) {
            throw new RuntimeException();
        }
        ImportResult result = blockchain.tryToConnect(block);
        System.out.println(df.format(new Date()) + " Imported block " + block.getShortDescr() + ": " + result + " (prework: " + exec1.getQueue().size() + ", work: " + exec2.getQueue().size() + ", blocks: " + exec1.getOrderMap().size() + ")");
    } else {
        if (block.getNumber() % 10000 == 0) {
            System.out.println("Skipping block #" + block.getNumber());
        }
    }
}

Example 15 with ImportResult

use of org.aion.mcf.core.ImportResult in project aion by aionnetwork.

the class AionBlockchainImpl method tryToConnect.

public synchronized ImportResult tryToConnect(final AionBlock block) {
    long currentTimestamp = System.currentTimeMillis() / THOUSAND_MS;
    if (block.getTimestamp() > (currentTimestamp + this.chainConfiguration.getConstants().getClockDriftBufferTime()))
        return INVALID_BLOCK;
    if (LOG.isDebugEnabled()) {
        LOG.debug("Try connect block hash: {}, number: {}", Hex.toHexString(block.getHash()).substring(0, 6), block.getNumber());
    }
    if (getBlockStore().getMaxNumber() >= block.getNumber() && getBlockStore().isBlockExist(block.getHash())) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Block already exist hash: {}, number: {}", Hex.toHexString(block.getHash()).substring(0, 6), block.getNumber());
        }
        // retry of well known block
        return EXIST;
    }
    final ImportResult ret;
    // The simple case got the block
    // to connect to the main chain
    final AionBlockSummary summary;
    if (bestBlock.isParentOf(block)) {
        summary = add(block);
        ret = summary == null ? INVALID_BLOCK : IMPORTED_BEST;
    } else {
        if (getBlockStore().isBlockExist(block.getParentHash())) {
            BigInteger oldTotalDiff = getTotalDifficulty();
            summary = tryConnectAndFork(block);
            ret = summary == null ? INVALID_BLOCK : (isMoreThan(getTotalDifficulty(), oldTotalDiff) ? IMPORTED_BEST : IMPORTED_NOT_BEST);
        } else {
            summary = null;
            ret = NO_PARENT;
        }
    }
    if (ret.isSuccessful()) {
        if (this.evtMgr != null) {
            IEvent evtOnBlock = new EventBlock(EventBlock.CALLBACK.ONBLOCK0);
            evtOnBlock.setFuncArgs(Collections.singletonList(summary));
            this.evtMgr.newEvent(evtOnBlock);
            IEvent evtTrace = new EventBlock(EventBlock.CALLBACK.ONTRACE0);
            String str = String.format("Block chain size: [ %d ]", this.getSizeInternal());
            evtTrace.setFuncArgs(Collections.singletonList(str));
            this.evtMgr.newEvent(evtTrace);
            if (ret == IMPORTED_BEST) {
                if (LOG.isTraceEnabled()) {
                    LOG.trace("IMPORTED_BEST");
                }
                IEvent evtOnBest = new EventBlock(EventBlock.CALLBACK.ONBEST0);
                evtOnBest.setFuncArgs(Arrays.asList(block, summary.getReceipts()));
                this.evtMgr.newEvent(evtOnBest);
            }
        }
    }
    return ret;
}